The magnet with kagome lattice has been studied for a long time in the condensed matter physics and material science communities [1]}, [2]}, [3]}. Kagome lattice is a two-dimensional honeycomb network of corner-sharing triangles. Owing to this special lattice geometry, a band structure with Dirac cones and a flat band has been revealed by the simple tight-binding model [4]}. Embodied with magnetism and spin-orbit coupling (SOC), some kagome magnets have been recently found to have exotic topological states and phenomena. For example, the spin-polarized Dirac cone with a spin-orbit-coupling induced gap has been observed in kagome ferromagnet Fe\(_3\) Sn\(_2\)  [5]}. Giant intrinsic anomalous Hall effect caused by the large Berry curvature have been observed in antiferromagnets Mn\(_3\) Sn, Mn\(_3\) Ge [6]}, [7]}, [8]}, and the magnetic Weyl semimetal Co\(_3\) Sn\(_2\) S\(_2\)  [9]}, [10]}. These experimental breakthroughs indicate that kagome magnet is a promising system for investigating the interplay of lattice geometry, electron correlation, and band topology.
